Unit heater



March 31, 1942.- I F M .YQUNG 2,278,376

UNIT HEATER y Filed Oct. 8, 1957 3 Sheets-Sheet 1 March 31, 1942. F. MYOUNG 2,278,376

UNIT HEATER Filed oct. a, 1937 s sheets-sheet 2k ATTORNEY March 31,1942. F M. YQUNG 2,278,376

' v UNIT HEATER Filedoct. a, 1957 As sheets-sheet;

Patented Mar. 3l, y1942 UNITED STATES PATENT oFFicE Application octobers, 1937, serial No. 168,0@

1 Claim.

My inventionv relates to unit heaters of the class, being particularlyadapted to be suspended from the ceiling, and has for its object,generally stated, to provide a heater that is simple, eiicient, Aneat inappearance, and onewhich may be manufactured at low cost.

I accomplish the foregoing objects by means of a novel housingstructure, novel core struc- I ture and novel means for supporting thehousingfby the core and for supporting the fan motor on the upper headerof the core.

To these and other useful ends my invention consists of parts,combinations of parts or their equivalents as hereinafter set forth'andclaimed and shown in the accompanying drawings in which:

Fig. 1 is a front elevation of my improved unit heater. c 4.

Fig. 21 is a side elevation of the unit as shown in Figure 1.

Fig'. 3 ris a fractional section of the housing frame taken on line 3-3of Figure 2.

Fig. 4 is a rear elevational viewof the core with the fan and itssupport removed.

Fig. 5 is a side elevation of the core as shown in Figure 4. p 1

Fig. 6 is a bottom view of the lowery header. Fig. '7 is a sideelevation of a unit having the housing and fan shroud cut-away so as toclearly illustrate the position of the core, fan shroud, fan and motor.

Fig. 8 isa transverse section taken on linel 8 -8 of Figure 7 having thefan removed.

.Y Fig. 9 is a fractional view of the top header illustrating the seatadapted to receive rthe cushion device for securing the top header tothetop ing and also illustrating how the two edges of, the farli-shroud arecut-away in order to make room for the motor support.

Asthus illustrated, my improved unit heater consists of a novel housinghaving a depth which provides room for the core, the fan and part Vofthe motor as illustrated in Figures 2 and `r1, whereby the ns only areexposed from a front view of the unit, thus forming a rectangularvoutlet about the size of the finned portion `of the coreiorfthe'passageof air from the core.

The housing comprises vertical side members I0 and II, each formed asindicated in Figure 8 byinwardly projecting anges I2 and I3. On the Theends of members I0 and II and their flanges are formed straight and atright-angles to the body ofthe member for a purpose which willhereinafter appear. f

Top and bottom-members I6 and I1 of the housing are formed similar tomembers Il) and Il each having inwardly extending flanges I8 and I9,members I8 having rearwardly extending flanges ZIJ- 20. Thus whenmemberslll, II, I6 and I'I are positioned as illustrated in Figure 1 aframe having a rectangular shape is provided, the ends of the framemembers being secured together as follows:

Iprovide four corner pieces 25 formed to complete the housing asillustrated in Figures 1, 2 and 3. It` will be noted in the variousguresthat the front and rear flanges of the top, bottom and side members ofthe housing are formed by an easy curve.- The outercorners of members 25arecurved to register with they outer corners of the other housingmembersas at 26. Members 25'are provided with a depression as at28-28formingflanges 29--29A which areadapted to act as supports for the endsof members III, II, I6 and I'I as clearly illustrated in Figure 3. Thuswhen the Amembers are assembled as indicated in thevarous vgures, a:frame is provided having curved outer corners` and edges and beingprovided with right-anglek inner air passage corners at the front andrear of the housing as clearly illustrated in Figure 1 Members 29arelong enough to provide a sub?. stantial seat ,for the frame membersandcon-` venient means for securely fastening they framev together, thusproviding a 'strong frame or housing having a neat. and pleasingappearance.

It will, be fseen that the exposed'joints be' tween members 25, I6 andI'I are on the'same vertical plane as members I4, and that the jointsbetween all of the members will add ,to the ap'- pearance of the frameinstead of detracting as in other devices of the class. I may'however,

A in some designs elect to form members 25in outlet side of members I0and II I provide rearwardly extending portions I4--I4 having inwardlyextending flanges I5-I5 (see Figure 8)'.

tegral with members I and II, in which case.

no horizontal contact line between these mem;-

bers'will be shown and the frame will consist .ofv

four separate --pieces rather than eight.

In order to further improve the appearance.

of the unit I provide moulding strips 30-30 being ypositioned on membersI2 adjacent theA whereby the blades may be adjusted and held 1n anydesired position.

I provide a suitalaley number of.` blades 3l, each being pivotally seecured tov flanges I 4 by means of bolts 32'. lThe boltshave...preferably spring supportedvnuts of which the ns may be suitablybonded t .y

the tubes.

Headers ll@ and 4I are provided withrearwardly extending projections 5Iand 52,4 each being provided with a screw` threaded opening 53 for thereception of the inlet and outlet pipes. Member 5| is provided with anextension 5t having a suitable surface to which the motor support 55V issecured'as illustrated in Figure 7. The motor 56 Vis secured to thev'bottom of this support by means of rubber lor composition cushions asillustrated and has fan blades 51. It will be noted that the housing ispreferably deep enough to extend over the larger part of the vfan motorand its support.

The core assembly as thus described, may be supported either by theinlet pipe or eye bolts 50-5 as will hereinafter appear. The method ofsecuring the upper header to housing member I6 is as follows:

Header 4|] is provided with rearwardly extending members preferably forits entirelength, into which eye bolts may-be -screwed as at 46-46. Nearthe rear corners ofthis extension Iprovide cushion seats having flanges60, the rear Aend being left open as at 6I. Thus when the 'core isinposition-within the housing,.the composition cushion washer 62 may beinserted between members 45 and I6. Member 62 is provided with and ispartially embraced by a `cupped washer 63 which is also flanged so as tobe embraced by openings in member I6, these openings being considerablylarger than bolt-65 which acts to secure the header to the housing.`This bolt is provided with a cushion washer 66V and a steel washer 61whereby the bolt may be` made taut and the necessary pressure placed on`the washers. Thus it will be seen that there is no metal fcontactbetween header 40 and member4 I6 and that the connections be` tweenthese members are practically on aline with the center of gravity. Y Y,

It is desired that the lower header `l|| befree to move vertically butprevented from swinging transversely relative to the housing or toprevent the housing from swinging independent' of theheader. For thispurpose I provide preferably U-shaped brackets 10, the upper -end beingsecured to the rearwardly extending ange `4'| on header 4I by means of abolt as clearly indi-r cated in Figure '7.- The other end of bracket 'l0is secured to member I'| by means of a suitable bolt 1I. Thus it will beseen that header 4I is free to move vertically independent of thehousing.

I may elect to use a connection between mem-l bers '|0 and similar tothe cushion connection between members 40 and I6 whereby there willYHowever, asv shown the noises set- I provide a novel fan shroud asfollows: This shroud is made in two parts 15 and 16 and is preferablypositioned and shaped as illustrated in Figures '7 and 8. The partingline is Vertical and the connections to the housing members are madethrough L irons 1l which are secured to members IU, II, I6 and I1.Members 15 and 'I6 are cut-away as indicated in Figure 11, to there-...by make room for the motor supported as clear- 10 ly indicated inFigures 7 and 11. Thus it will be seen that by removing .the bolts usedfor securing the shroud members to member 11, the

shroud may be removed without removing the may be used on various lengthunits; thus ther manufacture ofthe housing is simplified and it isstrong, light and efficient.

It will be noted that there is no strain put on the housing because ofthe manner of securing the core unit to the housing which in turn issupported directly by eye bolts or by the inlet pipe. In fact, theentire assembly is free from strain and vibrationalnoises eitherset upby the r action of the air, the fanrblades or the motor.

By referring to Figure '1 it will be noted Vthat an opening is providedin member I6 which is concentric with screw threaded opening 53 andconsiderable larger thanthis opening. 4Clearly,

therefore, the inlet pipe will not be contacted by` member I6.. Member||A is .provided .with .ex-

actly the same "opening 8| and in theA same position relative4 toopenings 53 in member 52.

These openings areindicated by dotted vlines in` Figure 1.

It will be noted by illustrated .by dotted lines, that openings. areprovidedin memberr I6 which are concentric with the body of eye-bolts5I)H and being considerably larger so-there is no contact betweenmembers I6 and 50. Thus there is no metal .contact between the housing;and the core excep'tmembers'l. f Y

Having thus V)shown and described my invenj 7 tion; I claimt.: A unitheater ofthe class described, comprise' ing in combination, a housinghaving a heat eX-,

change coreztherein, .said core comprising upper and 'lower headershaving finned tubes forming an operating.connection therebetween, saidhead-l ers each having' rearwardlyY 'extending' centrally positionedextensions, upwardly and downwardly directed inlet and outletA openingsin said exten- Y sions, a fan motor Vhaving 'a supporting connecbottompanel of said housing, said second yielding connections comprisingU-shaped brackets, one free end of 'each bracket'. being rigidlyconnectedto the'header and the'other free end being rigidly connected'tothe housing; y

f f :FREDi/r. iroUNG..

scrutinizing Figure A1 and asy

